<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title>filter对bind进行格式化</title>
		<script src="vue.js"></script>
	</head>

	<body>
		<div id="app">
			<div v-bind:id="dataId|formatId">hellovue</div>
		</div>

		<script>
			var vm = new Vue({
				el: "#app",
				data: {
					dataId: "dfff1"
				},
				filters: {
					formatId(value) {
						console.log(value)
						console.log(value.indexOf('d'))
						console.log(value.charAt(1))
						return value ? value.charAt(1) + value.indexOf('d') : ''
					}
				}
			})
		</script>
	</body>

</html>